Paul said: “I’ve been close to the family for years, and Bobby’s parents Joanne and Dave love the song – but they find it difficult to listen to sometimes because it’s so personal.

“It’s absolutely superb and the kids have been amazing. We thought it was important to give the kids and Bobby’s brother Harry a project to work on in his memory. The kids have really come together to do this for him.”

Bobby’s eight-year-old brother Harry has already raised thousands of pounds by selling wristbands door-to-door and sings on the single, alongside dozens of their talented schoolmates.

Headteacher Malcolm Davies told the ECHO the children had been “absolutely superb.”

He said: “We were approached by friends of the family, and we were only too happy to help.

“I can’t praise the children enough, they’ve been magnificent. Bobby’s brother Harry’s teacher, Ms Tettey, has been just incredible too.”

Teachers from the school also perform on the track with teacher Lynda Langford playing violin and Bobby’s form tutor Simone Tettey playing recorder.

Young Bobby’s death rocked the West Derby community after he was hit by a van while crossing Leyfield Road outside his school on October 24.

Campaigners have worked tirelessly since to improve road safety and awareness in the area, with posters bearing the six-year-old’s face telling drivers along the busy road to stick to the 20mph limit.

The campaign is supported by Bobby’s parents, Joanne and David, who have thanked everyone who has offered their support.

They said: “Our lives will never be the same, but we can help make the roads around our schools safer. No other families should have to go through this pain.”

You can buy the charity single on iTunes at itunes.apple.com/album/id951987628

Donate directly to the Bobby Colleran fund at fundrazr.com/campaigns/4tT22/ab/04E0Ee